1.Validation of the Korean Version of the DN4 Diagnostic Questionnaire for Neuropathic Pain in Patients with Lumbar or Lumbar-Radicular Pain.
Ho Joong KIM ; Joon Hee PARK ; Didier BOUHASSIRA ; Jae Hoon SHIN ; Bong Soon CHANG ; Choon Ki LEE ; Chang Hyun BAEK ; Jin S YEOM
Yonsei Medical Journal 2016;57(2):449-454
PURPOSE: To evaluate the diagnostic value of the Korean version of the Douleur Neuropathique 4 (DN4) questionnaire and to validate this questionnaire in terms of psychometric properties in patients with chronic pain due to degenerative spinal disease. MATERIALS AND METHODS: The Korean version of the DN4 questionnaire, which was translated and linguistically validated by the MAPI Research Group, was tested on 83 patients with lumbar or lumbar-radicular pain. Test-retest reliability was evaluated in a subsample of 40 patients who completed two assessments with an interval of 2 weeks. Nociceptive pain and neuropathic component pain were diagnosed in 40 and 43 patients, respectively. RESULTS: The Cronbach's alpha coefficient of internal consistency was 0.819, and the test-retest intraclass correlation coefficient (3, 1) (95% confidence interval) was 0.813 (0.776-0.847) (n=40). The area under the receiver-operator characteristics curve was 0.953 (p<0.001), with 95% confidence interval between 0.869 and 0.990. The Korean version of the DN4 questionnaire showed a sensitivity of 100% and 87.1%, and a specificity of 88.2% and 94.1% at the cutoff value of 3/10 and 4/10, respectively, for discriminating neuropathic component pain. CONCLUSION: The present study demonstrated the good discriminatory power of DN4 between nociceptive pain and neuropathic component pain in patients with lumbar or lumbar-radicular pain.
Adult
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Aged
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Aged, 80 and over
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Chronic Pain/*diagnosis
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Female
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Humans
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Male
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Middle Aged
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Neuralgia/*diagnosis
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Pain Measurement/*methods
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Psychometrics
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Reproducibility of Results
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Sensitivity and Specificity
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Surveys and Questionnaires/*standards
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Translating